Hose clamp



Aug. 2s, 1945. N. SEAHOLM 2,383,920

HOSE CLAMP Filed 001:. 2, 1943 if; m. za n 'W t/zjwl. 22 #Y (f1-j ff alf/ y S L? d? 2j' 73' l 0 /Z l A I INVENTOR; mfww, I" BY c /a 0'" l raras HOSE CLAMP Nils Seaholm, Mount Vernon, N. Y., assignor to Carroll W. Prochaska, Tuckahoe, N. if.

1 Claim.

'Ihis invention relates to clamping devices for auto hose, sand blast hose and the like and has for its particular objects the provision of a rug ged, readily adjustable clamp of that character' which may be conveniently applied and removed from a hose without disturbing the position of the latter. Further objects of the invention are the provision of a clamp construction which is extremely cheap to manufacture, compact and attractive in appearance. Other objects of the invention will hereinafter appear.

In the accompanying drawing, in which I have illustrated certain preferred forms of the invention,

Figure l is a side elevation and Figure 2 an end elevation of a clamp embodying one form of the invention; y

Figure 3 is an enlarged fragmentary, central, vertical section, taken on the line 3- 3 of Figure 2, the same being partly broken away;

Figure 4 is a transverse section, taken on the line ci-t of Figure 3:

Figure 5 is an enlarged fragmentary, vertical section, taken along the longitudinal axis of the lower portion of the clamp shown in Figure l; and

Figure 6 is a perspective view of a modified form of worm shaft, isolated.

Referring to the drawing and the construction shown therein, the reference numeral I0 designates generally the band member of the clamp, the same being formed of two halves or elements II and I2 that are hinged together in the manner hereinafter explained. The lower end a of the element II is folded on itself to reinforce the same and the folded portions are apertured, as indicated by the reference letter b, and are rigidly secured together by a rivet c. The lower end of the element I2 is also folded on itself to form an eye d which is inserted through the laperture b and these latter folded portions are rigidly secured together by a rivet e. v

The elements II and l2 are respectively cut away to form longitudinal slots I3 and I3 and thereby reduce are weight thereof without objectionably weakening the same. The band element II is also provided with a series of parallel, slightly oblique slots I4 which are tapered at their respective ends as designated by the reference letter a: and which slots serve to engage a worm element hereinafter described.

The upper end f of the element l2 is also folded on itself to reinforce the same and to form a stop element to prevent the escape thereover of a I housing member l5 that is rigidly secured by gitudnally 0f rivets y, g' to the element I2 immediately beyond I the folded area thereof. Said housing has opposing circular terminal apertures I6 and I6', opposing slots Il and Il' and inturned lower ends or feet I 8 and i8' whose adjacent faces abut each other.

A worm shaft 2D is journalled in the housing Iii, the same projecting through the said terminal apertures It, I6' thereof. An annular shoulder 2! which is formed on said shaft adjacent the reduced or attened end 22 thereof functions, in co-operation with the adjacent lateral wall of the housing, as a thrust bearing for said shaft. A worm sleeve 23, which is of a size to snugly fit on said Shaft lbetween -the lateral walls of the housing, is rigidly splined to said shaft by a pin lor spline element 2t which projects through said sleeve and said shaft and has a snug fit therewith.

In Figure 6, the shaft 25 shown therein has an enlarged end or head 25 which is provided with a terminal slot 2l for the reception of a screw driver and said shaft is adapted to be substituted, if desired, for the shaft shown in Figures 1--3 which latter has a attened end for the reception of a wrench.

The free end of the element II is desirably cut off to an oblique edge y to facilitate its entrance into the slots Il of the housing when applying the clamp to aV hose or the like and admit of the free rotation of the worm when such oblique A edge ,engages the same and thereafter of the successive entry of the worm into each of the adjoining slots on said element II.

My improved clamp due to its unique'construction is remarkably strong, being capable of resisting without breakage or distortion of the housing a pressure exerted on said shaft by means of a socket wrench or screw-driver of several hundred pounds. 'Ihis is of the utmost importance in the automotive and many heavy industries employing water cooled gasoline engines, especially since such clamps are often required to withstand on test a minimum applied pressure of pounds.

The construction of the band element with two plies, integrally united together, at the end thereof to which the housingmember I5 is riveted results in the edge of the lower ply or fold f functioning as a remarkably effective stop to insure that the housing cannot escape over the adjacent end of the band element since the rear end of the foot I8 will, when high pressure is applied to the worm 23, ibeincapable of movement lonthe band member even were the rivets y, 9' to ybecome sheared of! `under the ap-y :Y

,a single 'plyvof tnroughom'ine principal portion ot its length that'is folded on itself immepliedhighpressure. Also, due to the i'act that the opposed inturned feet which form the bottomof the housing 'I5 abut ont:` line transversely of the longitudinal axis of the bandmember, the housing can neither collapse nor spread under diately adjacent :one end thereof l'to form two l l plies,vthe lower one otsaid plies havinglan edge that extends transversely ot the longitudinal 'axis soi-'thailand'member and which serves as an abutment, a housing member formed of a single sheet of metal rigidly secured to said lband member'and whose lower edge abuts against;- said lower ply edge. said housing member having opposing end walls each provided with an aperture for the reception of a worm shaft and also each provided with a transverse bottom slot for the reception of two plies of the band member when the same are in overlapped relation on each other and said housing member having opposing feet elements, integral therewith, whose free ends abut each other and which elements constitute the bottom of said housing member.

NHS SEAHOLM.' 

